Electric-lamp socket.



No. 884,102. PATENTED APR. 7, 1908,

l M. NORDBN.

ELECTRIC LAMP SOCKET.

APPLICATION FILED MAL/4.1907

UNITED STATES PATENT OFFICE.

MORTIMER NORDEN, OF NEW YORK, N. Y., ASSIGNOR TO JOSEPH NORDEN, OF NEWYORK, N. Y.

ELECTRIC-LAMP SOCKET.

To all whom it may cOncern.

Be it known that I, MORTIMER NORDEN, a citizen of the United States,residing at the borough of Manhattan, city, county, and State of NewYork, have invented an Improvement in Electric-Lam Sockets, of which thefollowing is a speciication.

My invention relates to an incandescent electric socket adaptedespecially for use in electric signs for decorative purposes ortemporary illumination, with the object of securing the same with equalfacility in one or several Ways.

The device of my invention may be secured to a back plate or foundationof any desired character; to a face plate especially of the aperturedcharacter employed in elec tric signs or the same may be supported bythe parallel lines of electric conductors employed in temporaryillumination for decorative purposes.

In carrying out my invention the socket employed is preferably formed ofvitrified material and is so constructed at opposite sides and centrallyof the socket as to receive and frictionally hold suitable nuts forclamping screws. Holes are provided through the socket from oppositesides that aline with the threaded holes of the nuts and as the nuts areplaced centrally the same screws are adapted to pass through the holesin either direction into the threaded apertures of the nuts in clampingthe socket member to either a foundation or apertured face plate. Atopposite points on the socket surfaces at right angles to the said nutsand places for the attaching screws the socket is recessed and aperturedso as to provide for metallic prolongations of the threaded cup of thesocket and the center plug, which prolongations form conductors and areprovided with screws to which are clamped the wires of the electricconductors which run along at opposite sides of the socket.

In the-drawings, Figure 1 is an elevation view and Fig. 2 a sideelevation representing the device of my improvement, together with theelectric conductors connected to the same, Fig. 3 is a sectional plan atthe dotted line as, w, of Fig. 1,Fig. 4 is a sectional plan at thedotted line y, y, of Fig. 1 and at right angles to Fig. 3, and Fig. 5 isa side view or plan of the parts as shown in Fig. 1. Figs. 3 and 4 showthe device of my improvement as connected to an apertured Specificationof Letters Patent.

Application filed March 4, 1907.

Patented April '7, 1908.

Serial No. 360,349.

face-plate and Fig. 5 as connected to afoundation or back plate.

a represents the socket body of circular form in the elevation Fig. 1,and curved in outline as shown in Figs. 2, 4 and 5. This socket body ismade referably of a suitable vitrified material suc1 as porcelain andthe same is provided at opposite points with shoulders formed bystraightening the curved sides, the shoulders a a being at one side andthe shoulder a a at the op osite side, the respective edges of the shouders forming straight lines from one surface of the socket body to theother, and one face of the socket body is provided with the flange a Thesocket body at these shoulders a a is provided with transverseperforations or openings 2, 8, 4 and 5 to receive screws 6 7 and thebody at the central portion is provided with recesses intersecting thesaid openings 2, 3, 4 and 5 to receive the nuts I), the threadedopenings in these nuts alining with the aforesaid transverse openingsthrough the socket body so that the screws 6 7 when passed through theopenings 2 3 from one side or 4 5 from the other side may with equalfacility be turned into the threaded openings of the nuts. The nuts I)may be below the surface of the socket body and the space be filled withcement.

In Figs. 3 and 4 0 represents an apertured face-plate, such a plate asis usually employed with electric signs and in which the aperture is ofsufficient diameter to receive within the same the flange a providingfor the surface of the plate to rest against the face of the socketbody, the screws 6 7 passing through openings in the plate 0, throughthe openings 4 5 and into engagement with the threads of the nuts 6whereby the said face-plate and socket body are firmly connectedtogether.

The foundation or back plate (1, Fig. 5, comes behind the socket body aand when the same is employed with said socket body the screws 6 7 assthrough openings in said plate (Z througi the transverse openings 2 3 ofthe socket body into engagement with the threaded openings of the nutsI) so as to hold the socket body to the foundation or back plate, thescrews 6 7 therefore with equal facility passing through either theapertured face-plate or the foundation or back plate and through thetransverse openings of the socket body to connection with the centrallyplaced nuts I). In securing the socket body to either plate 0 or d, thesocket body a is provided with a recess to receive the threaded lampsocket e of sheet metal which is of usual form and placed in such recessand securely held to the socket body by one or more attaching bolts 8which pass through the base of the socket body and through the socket e.As is usual in sockets for incandescent lights, a portion of the base ofthe socket e is cut away to rovide a place for the central lug f andtiis is connected to the socket body by an attaching bolt 9. Theopposite sides of the socket body a are provided at right angles to thetransverse openings for the screws 6 7 with side recesses a a. See Figs.4 and 5. These recesses communicate with the interior of the socket bodyand are adapted to receive the bared wires of the conductors g 9 Thecenter plug f (see especially Figs. 1 and 4) is provided with aprolongationf having a bent end in the recess a to which is connected ascrew 10 by means of which the bared wire of the conductor 9 is clampedand so mechanically fastened and electrically connected to the centerplug f.

e represents an L-shaped bar, and a screw 11 passing through the innerend of said bar 6 and through the base of the threaded lamp socket esecures these parts together, and

, this L-shaped bar extends from such connection into the recess a andit is provided with a screw 12 for securing the bared wire of theconductor g mechanically to said bar a and electrically to the threadedlamp socket e.

Insulating material of any desired character may if desired be employedin connection with the center plug f and its prolongation f and the bar6 where the same extend into the recesses a a so as to form a moreperfect and even seat or bearing for said parts and overcome anytendency to looseness therein when connecting to said parts the baredwires of the electric conductors.

The form imparted to the socket body a makes the same easy to mold andeasy to handle and the structure thereof providing connection for theface or back plate is not only simple but not at all likely to get outof order, the nuts being held in position by the emplacement of theconnecting screws and the bend that is necessary to impart to the baredwires of the conductors in connecting the same to the terminals of thelamp sockets and center plug performs the function of holding thesockets rigidly to the conductor wires as the same are under tension.

L, The device of my improvement is a solid compact structure dispensingwith the usual side lugs heretofore employed upon sockets of thischaracter and which are so likely to be broken off,

I claim as my invention:

1. An electric lamp socket, provided at opposite sides with transverseopenings there through for attaching screws and with intermediatelyplaced nuts to be engaged by said screws in connecting said socket to aplate at either side thereof.

2. An electric lamp socket, provided at opposite sides with transverselyplaced openings therethrough near the edges and with centrally disposedrecesses intersecting said openings, nuts placed in said recesses withthe threaded openings thereof alining with the transverse openings,screws adapted to pass through corresponding openings from either sideof the socket in connecting said socket to a plate or sup ort.

3. A socket body of suitable insulating material for an electric lamp ofcircular form in plan and curved form in elevation, provided at oppositesides with shoulders producing the maximum diameter of the socket bodyat the faces, openings transversely placed in said body through thecentral portion of said shoulders, intersecting recesses in the sides ofthe socket body, nuts received in said recesses with their threadedopenings alining with said transverse openings and screws passingthrough said openings from either side of the socket body to connectionwith said nuts in clamping the s ocket body to a plfiedrotheffoun'dation. it? The combination Wltll a socket body of suitableinsulating material and a plate acting as a support therefor, of deviceslocated at opposite sides of the socket body and screws co-actingtherewith and adapted to connect the said socket body at either side tosaid plate, recesses formed in the surfaces of said socket body atopposite sides and in a line at right angles to the line of the saidattaching screws, devices connected with the said socket body forreceiving an incandescent electric lamp and electric terminals thereofextending into the said recesses and adapted for connection with theelectric conductors.

Signed by me this 14th day of November MORTIMER NORDEN.

Witnesses Gno. T. PrNoKNnY, BERTHA M. ALLEN.

